To set a speed record in a measured (straight-line) distance d, a race car must be

Chapter 2, Problem 10

(choose chapter or problem)

To set a speed record in a measured (straight-line) distance d, a race car must be driven first in one direction (in time \(t_{1}\)) and then in the opposite direction (in time \(t_{2}\)).

(a) To eliminate the effects of the wind and obtain the car’s speed \(v_{c}\) in a windless situation, should we find the average of \(d / t_{1} \text { and } d / t_{2}\) (method 1) or should we divide d by the average of \(t_{1}\) and \(t_{2}\)?

(b) What is the fractional difference in the two methods when a steady wind blows along the car’s route and the ratio of the wind speed \(v_{w}\) to the car’s speed \(v_{c}\) is 0.0240?